There were some added public APIs for AtkValue, which was not updated to
atk/atk.symbols, so make up for them.
https://bugzilla.gnome.org/show_bug.cgi?id=726216
atk_text_set_selection
atk_util_get_type
atk_value_get_current_value
+ atk_value_get_increment
atk_value_get_maximum_value
atk_value_get_minimum_increment
atk_value_get_minimum_value
+ atk_value_get_range
+ atk_value_get_sub_ranges
atk_value_get_type
+ atk_value_get_value_and_text
atk_value_set_current_value
+ atk_value_set_value
+ atk_value_type_get_localized_name
+ atk_value_type_get_name
atk_window_get_type